Number of dissectable polyhedra with n tetrahedral cells and symmetry of type B.

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =2a(5) =5a(6) =11a(7) =25a(8) =66a(9) =131a(10) =349a(11) =708a(12) =1911a(13) =3856a(14) =10604a(15) =21597a(16) =59961a(17) =123266a(18) =345060a(19) =715198a(20) =2015416a(21) =4206926a(22) =11919257a(23) =25032840a(24) =71246129a(25) =150413234a(26) =429750208a(27) =911379241a(28) =2612614298a(29) =5562367173